Electric-wire terminal.



PATENTED MAY 1, 1906.

J. D. WARREN.

ELECTRIC WIRE TERMINAL.

APPLICATION FILED MAY 2, 1905.

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UNITED STATES PATENT OFFICE.

JOSEPH D. WARREN, OF PRQVIDENCE, RHODE ISLAND. ELECTRIC-WHERE TERMINAL. 2

Specification of Letters Patent.

- Application filed. May 2, 1905- Serial No. 268,452.

To all whom/it mayconcern:

' dence, in the county of Providence and State of Rhode Island, have invented a new and useful Im rovement in Electric-Wire Termiment in electric-wire terminals used for con;

necting electric wires to the positive and negative poles of electric batteries or cells.-

In the use of electric batteries or dry cells for automobile or similar purposes the connecting-wires are usually connected to the cells by twisting the end of the wire around the binding-posts on the cell and securing the same by tightening the bindingost fastener onto the wire. In practice I d that the constant jarring and vibration which the cells receive when used for this purpose tend to loosen the fasteners on the binding-posts, thus allowing the ends of the wires to work loose and break the circuit.

The object of my invention is to more securely fasten the wires to the bindingosts of the batteries than has heretofore done, and I accomplish this object by providing the Wires with an im roved terminal ada ted to engage with the inding-post and the bindin -post fastener under sprin tension, where y the fastener is prevente from unscrewing through jars, vibrations, or simi lar causes.

My mventlon consists 1n the eculiar and novel construction of a termina for electric wires and the fastener of a battery bindingpost, the terminal cooperating with the fastener under spring tension to hold the fastener and prevent the same from working loose and breaking the circuit, as will be more fully set forth hereinafter.

Figure 1 is a side view of an ordinary dry cell, showing the usual binding-posts connected to the ositive and negative oles of the cell rovi ed with my im rove terminals and asteners connecting t e wires to the bindingosts. Fig. 2 is anenlarged detail sectiona view of my im roved electric-wire terminal and fastener, s owing the same secured to a binding-post broken away from the cell. Fig. 3 is an enlarged face view of my improved terminal removed from the bindingepost andwire. 'Fi 4 is an enlar ed side view of my improved indmg- 0st astener, and Fig. 5 is an enlarged en v ew of the fastener looking at the bottom of Fig. 4.

In the drawin s, a'indicates an ordinary dry cell, having t e usual zinc'shell a, forming the negative pole,and the carbon plate a forming the positive pole of the cell. A screw-threaded binding-post b is secured to the negative ole or zinc'shell a by soldering the same to t e shell, and a binding-post b is secured to the positive pole or carbon plate a, by the nut b 1n the usual way, as shown in Fig. 1.

Patented May 1, 1906.

My imiprroved electric-wire terminal 0 is stamped 0m sheet spring metal by dies constructed to form in the fiat an elongated body having at one end the side wings a '0, as

shown in broken lines in Fig. 3, for fastening the connecting-wire eto the terminal, the hole I c for the bindin post I) adjacent the Win s c c and the roun ed end 0 having the ho e c for the binding-post b, and the stamped-up ribs 0 c radiating from the hole 0 as shown in Fig. 3. The W111 s c c are now bent up to form the semicircu ar fastening end a and the body of the blank bent U-shaped to bring the hole c in the end 0 into a position to coincide with the hole 0*", as shown in Fig. 2, and

form the spring-arm 0", having the stamped-- up ribs 0 c on the end, as shown in Fig. 3.

The binding-post fastener dis constructed to screw onto the screw-threaded bindingpost I), and has the knurled ed e d and the notches d d in the bottom 0 the fastener adapted to fit the ribs 0 c on the terminal 0.

In the use of my improved electric-wire terminal and fastener the terminals is secured to the end of the Wire 6 by placing the end of the wire a in the semicircular end 0 and folding the Wings 0 a over the wire, as shown in Fi s. land 2. The Wire may be soldered in t e end 0, of the terminal, if desired. The terminal is now placed on the binding-plost b (the ICO tener d and by the tension of the spring-arm shaped to form the side win s c c, a body portion having the hole 0 an bent substantially U shape to form the s ring-arm 0" having the rounded end 0 the liole c coinciding with the hole c and the ribs 0 c radiating from the hole 0 and a binding-post fastener d constructed to screwonto a binding-post of an electric cell and having the notches d (1 whereby an electric wire is secured to the terminal by folding the Wings 0 0' over the wire, and the terminal secured to the binding-post of an electric cell by passing the binding-post through the holes 0 and c in the terminal and screwing the fastener onto the bindingpost to bring the ribs 0 c on the sprin -arm of the termmal into engagement wit the notches d d in the fastener for the purpose, as described. v V

2. The combination with an electric cell it having the binding-posts b 12 secured to the positive and negatlve poles of the cell, of an electric-wire terminal 0. stamped from sheet sign, as described. 4 In testimony whereof spring metal and shaped to form the side wings o cg a body portion having the hole 0 and ent substantially LII-shaped to form the spring-arm 0 having the rounded end 0 the hole 0 coinciding with the hole 0 and the ribs 0 c radiating from the hole a, a bindingpost fastener d having the notches (i d and constructed to screw onto a binding-post 1;, whereby a wire is secured to the terminal 0 by folding the wings a c'over the wire, the terminal c is secured to the binding-post and the fastener (I held from unscrewing by the ribs with the spring ten I have signed my name to this specification in the. presence of two subscribing witnesses JOSEEH, D. WARREN.

notches d (1 m the fastenerun Witnesses:

'AnA E. HAGERTY, J i A. MILLER, Jr. 

